Improvement in dies for forming the sockets of tools



J'. D. ALLISON.

DIES FOR FORMING THE SOCKETS 0F TOOLS. No.176,159.

Patented. Anril18, 1876.

Jig. 6.

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JOHN D. ALLISON, OF CROMWELL, CONNECTICUT.

IMPROVEMENT IN DIES FOR FORMING THE SOCKETS OF TOOLS.

Specification forming part of Letters Patent No. 1 76,159, dated April18, 1876; application filed March 3, 1876.

To all whom it may concern:

Be it known that I, JOHN D. ALLISON, of Cromwell, in the county ofMiddlesex and State of Connecticut, have invented certain new and usefulln'lprovements in Dies for Forming the Sockets of Tools; and I do herebydeclare that the following is a full, clear,

' and exact description thereof, whereby a person skilled in the art canmake and use the same, reference being had to the accompanying drawing,and to the letters of reference marked thereon.

Like letters'in the figures indicate the same parts.

My invention relates to such tools as harniners, picks, adzes, &c.,which are made with an elongated eye or socket for the reception of thehandle; and its object is to provide a simple and expeditious manner offorming the socket from a bar of metal of the proper size for the bodyof the tool.

My invention consists in dies and punches of the form and constructionhereinafter described.

In the accompanying drawing, Figure 1 shows a longitudinal section, andFig. 2 shows a lateral section, of the first pair of dies used inpartially forming the socket. Fig. 3 shows a longitudinal section, andFig. 4a lateral section, of the dies used in completing the forging ofthesocket. Fig. 5 is a top view of the lower die in Figs. 1 and 2, andFig. 6 is a top 'view of the lower die in Figs. 3 and 4..

A is the bar of metal, of which the hammer or other tool is to beformed. B is the upper one of the first pair of dies, and C is thelower. The bar is laid over the recess in the lower die C, and is struckby the upper die or punch B in a drop-hammer or press, so as to forcethe metal down into the recess, while the punch B penetrates the metalnearly to the bottom, as shown in Figs. 1 and 2. The bar is then removedfrom these dies, and the bottom of the depression formed is punched outin any ordinary manner of punching metals. The bar is then placed in thesecond dies. D is the upper die. E is a detached punch or plug, of theform shown in the drawing, with an enlarged lower end to act upon themeta-l of the socket, and a smaller shank above. F is the lower die,which has an opening entirely through it for giving form torthc exteriorof the socket. The bar, as previously partially formed, is placed withthe socket resting in the lower die, and the plug E is placed in therecess already formed in the bar. The die is then allowed to fall uponit in a drop-hammer, which drives it through the socket, enlarging andopening it to the required form, and elongating it as shown in thedrawing. The plug E falls through the opening in the lower die into avessel of water underneath, which cools it for the next operation. 1

The punching of the socket draws down the central portion of the bar, asshown in Figs. 1 and 3, so that it becomes necessary to straighten it.This is done by dropping the flat die D upon the top of the bar while itremains in the die F. The hammer or other tool is then finished in theusual manner.

What I- claim as my invention is- 1. The d'ies D F and plug E,constructed and used conjointly, substantially in the manner hereindescribed.

2. The combination of the dies B C, the plug E, and the dies D F, forforging the elongated sockets of tools, substantially as described.

JOHN D. ALLISON.

Witnesses THEo. G. ELLIs, WENDELL R. CURTIS.

